Omnipotent Data

"These two people are my suspects. According to criminal behavior, the possibility that this middle-aged man is the robber is as high as 80%! His briefcase may not contain any documents. Instead, it's white... money!" Bai Yan looked at the crowd and said after a few pauses.

"What, Detective Bai, can I ask a question?" Cheng Nuo raised his hand and said.

"Okay, tell me." Bai Yan's mouth revealed a touch of confidence.

He still doesn't believe that he can't solve the problem raised by a high school student!

"What, I just want to say that the middle-aged man in the photo has a section missing on his right index finger." Cheng Nuo pointed out Bai Yan's mistake very "kindly".

Bai Yan was taken aback. He turned his head and stared carefully at the right hand of the middle-aged man holding the briefcase in the photo.

Sure enough, because the monitoring screen was a bit blurry, Bai Yan was not paid careful attention to this at the beginning.

Now if you look carefully, you can indeed see that the index finger of the middle-aged man's right hand is missing a section.

In the photo of the robber, the index finger of the robber's right hand is completely normal. Not a single section is missing.

Bai Yan: "..."

Bai Yan looked at Cheng Nuo speechlessly.

How did this kid... find out about this?

He found out this detail only after he had almost pasted his face on the photo.

And Cheng Nuo was standing at least three or four meters away from the photo!

What Bai Yan didn't know was that with Cheng Nuo's data ability, as long as it was within his line of sight, no matter whether he could see it clearly or not, the data would appear in Cheng Nuo's eyes.

And when Cheng Nuo was collecting the data of the middle-aged man in the photo just now, he discovered that the length of his right index finger was a little abnormal, only 2.11 centimeters! Only then did it deduce that the man's finger was missing.

Bai Yan, who was demolished by Cheng Nuo, looked a little embarrassed now.

One second he swore that the middle-aged man was one of the robbers, and the next second he was slapped in the face by Cheng Nuo's casual words.

This slap in the face...don't be too fast!

Facing Captain Yang and Jiang Lan's suspicious eyes, Bai Yan coughed to cover up his embarrassment. Then he took a deep breath and calmed down a bit like beating someone. Pointing to the photo of the second robber, he said.

"Now let me talk about the second robber. I have found three suspects whose physical characteristics are similar to this robber." Speaking of this robber, Bai Yan was obviously much more confident. "I selected these three people from thousands of people. I am 100% sure. Among these three people is the robber we are looking for."

Swish!

Suddenly, after Bai Yan finished standing up, Cheng Nuo slowly raised his hand.

Bai Yan's face froze, and he tried to calm down his tone, "Student Cheng Nuo, do you have any questions?"

"Oh, I have a little question." Cheng Nuo smiled, walked to the whiteboard, and took down the photo of the second robber.

Then, he said unhurriedly, "Detective Bai, I found a problem. The arm lengths of the suspects you found are not the same as those of the robbers."

"Oh?" Captain Yang on the side became interested. "Little brother, how did you find out?"

Although the size of the two photos is the same, the proportion of the characters in the photo to the whole photo is not the same.

It's like the same person, a photo taken at close range, and a photo taken at a distance. The size of the picture is the same, but the proportion of the person in the picture is different.

This also makes it impossible to compare two different photos with different proportions of characters with great precision. All Bai Yan can do is estimate a rough value.

Facing Captain Yang's question, Cheng Nuo shook his head and smiled, "Captain Yang,

Someone can't do it, and I can't do it. "

A certain Mr. Bai Yan, who did not want to be named, turned dark.

"Do you know what my nickname is?" Cheng Nuo glanced at Captain Yang and said.

"What is it?" Captain Yang was very cooperative with Cheng Nuo's pretense this time.

"Detective Edogawa Nonan!"

Edogawa... Nolan? Ah bah, Noonan!

Captain Yang was stunned!

Bai Yan folded his arms and silently looked at Cheng Nuo who had already started to put on a show.

show! Please continue to show!

I just watched your show with the Italian cannon of the second battalion commander!

Cheng Nuo went through the data in his mind, holding the photo with the No. 2 robber, and said.

"From the photos alone, we definitely cannot know the height and arm length of this robber. But we can look at this." Cheng Nuo pointed to the floor tiles on the bank's floor in the photo and said, "The floor tiles in the bank The specification is 300*400mm, that is, the length of the tile is 40 cm and the width is 30 cm!"

"And the number of floor tiles covered by the robber's shadow is 3.54. Then the length of his shadow is 141.60 cm!"

"Qingcheng Bank's Minjiang Road Sub-branch is located at 120.3354 degrees east longitude and 36.0748 degrees north latitude. The time is 7:05 am, and the sun's insolation angle at this time is 32.14 degrees."

"Calculating the above data, it can be concluded that the robber's height is 178.28 centimeters! According to the ratio, the robber's arm length is 0.3397 of his height, so his arm length is 60.57 centimeters!"

Cheng Nuo let out a sigh of relief, pointing to the three suspects that Bai Yan found.

"Let's talk about this person's arm length later!"

Cheng Nuo pointed to the lamppost next to the man in the photo and said.

"Generally speaking, these street light poles are of uniform specifications. Therefore, the height of the street light pole can be determined as 8.00 meters! Because the camera, the suspect, and the street light, the three objects are not in the same plane. Therefore, the height of the street light needs to pass through the angle Calculate. The angle between the street lamp and the camera is... After calculating the above data, it can be concluded that the suspect's arm length is 58.35 cm! The difference of two centimeters is still quite large. So rule it out!"

"Okay, let's talk about the second suspect identified by Police Officer Bai. Let's use the briefcase in his hand as a reference. The size of the briefcase is 16 inches, which is 53.33 centimeters, and then..."

Cheng Nuo was in front of the whiteboard, eloquent, and analyzed the arm lengths of the people in the photo with reason and evidence.

Little did they know, the three of Bai Yan were already dumbfounded!

Needless to say, Jiang Lan, as Cheng Nuo's mother, watched Cheng Nuo crackling a lot of numbers in front of the whiteboard, and was shocked but also relieved.

Look at how powerful my precious son is, what he says is more professional than the two policemen!

Bai Yan stood on the spot in a daze, with a turbulent sea in his heart. For a moment I didn't know what to say.

It would be fine if Cheng Nuo's long list of data was just nonsense. But the point is... Those data are really justified.

For a moment, Bai Yan felt a little skeptical about life!

I... can't even compare to a high school student? !

alright, you win!

You don’t need to buy oranges for me, and you don’t need to go all the way to move orange trees. Because... Tangerine came here by himself!

…………

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